Method and device for an aircraft buffet reduction

1. A method of dynamically reducing the buffeting of an airplane, comprising the steps of:

detecting a risk of buffeting of the airplane in flight by a monitor; and

turning, by an actuator, at least one control surface arranged at a trailing edge of each wing of the airplane,

wherein:

said at least one control surface is turned, at a predetermined respective rate of turn, into a predetermined respective position to modify lift profile of the wings along a wingspan length to reduce lift in at least one buffeting-generating region of each wing,

the predetermined respective rate of turn is between 0.2°/s and 2°/s and the predetermined position is at an angle of between −5° and +5′ relative to initial position, prior to turning, and

the risk of buffeting is detected by the monitor, when the following two conditions are simultaneously satisfied:

altitude of the airplane is above a predetermined altitude; and

a G-factor command of the airplane is above a predetermined G-factor.

2. The method as claimed in claim 1 ,

wherein at least one of said control surfaces is an aileron of the airplane.

3. The method as claimed in claim 1 ,

wherein at least one of said control surfaces is a flap or tab of the airplane.

4. The method as claimed in claim 1 ,

the risk of buffeting is detected by the monitor, when the following two conditions are simultaneously satisfied:

there is a reduced coefficient of lift level which indicates that the airplane is in a zone in which a wing has a high coefficient of lift; and

there is a G-factor demand.